GE VAT200 Quick Start Manual page 102

Troubleshooting for OV, LV error
The inverter displays OV, LV
NO
Is the main circuit fuse
intact？
YES
YES
Any abnormalities in
appearances?
NO
Apply the power
Any abnormal
indications?
NO
Input operation command
Is FWD LED keeping
lit after flash?
YES
Input frequency commands
Is the output frequency of the
operating unit displayed?
YES
Are there
voltage output at T1,T2,T3
output terminals?
YES
Connect the motor to run
Any abnormal value?
NO
Any current of all
phase even?
YES
The inverter's output is OK
YES
Replace the control board
NO
NO
Replace the control board
NO
Replace the control board
YES
NO
5-10
Chapter 5 Troubleshooting and maintenance
Replace the main circuit fuse
Replace the faulty circuit
board
Replace the control board
Is the inverter
working well after
replacement
‧
The inverter faults
Perform detailed check
NO
YES